SignatureConfiguration signatureConfiguration = new SignatureConfiguration();
    signatureConfiguration.setApiKey("apiKey");
    signatureConfiguration.setSecretKey("secretKey");

    ClientConfiguration clientConfiguration = new ClientConfiguration();
    clientConfiguration.setSignatureConfiguration(signatureConfiguration);
    SpotRestApi spotRestApi = new SpotRestApi(clientConfiguration);

    SignatureConfiguration signatureConfiguration = new SignatureConfiguration();
    signatureConfiguration.setApiKey("apiKey");
    signatureConfiguration.setPrivateKey("path/to/private.key");
    // if the private key is protected by a password
    signatureConfiguration.setPrivateKeyPass("privateKeyPass");
    
    ClientConfiguration clientConfiguration = new ClientConfiguration();
    clientConfiguration.setSignatureConfiguration(signatureConfiguration);
    SpotRestApi spotRestApi = new SpotRestApi(clientConfiguration);

    SignatureConfiguration signatureConfiguration = new SignatureConfiguration();
    signatureConfiguration.setApiKey("apiKey");
    signatureConfiguration.setSecretKey("secretKey");

    WebSocketClientConfiguration clientConfiguration = new WebSocketClientConfiguration();
    clientConfiguration.setSignatureConfiguration(signatureConfiguration);
    SpotWebSocketApi spotRestApi = new SpotWebSocketApi(clientConfiguration);

    SignatureConfiguration signatureConfiguration = new SignatureConfiguration();
    signatureConfiguration.setApiKey("apiKey");
    signatureConfiguration.setPrivateKey("path/to/private.key");
    // if the private key is protected by a password
    signatureConfiguration.setPrivateKeyPass("privateKeyPass");
    
    WebSocketClientConfiguration clientConfiguration = new WebSocketClientConfiguration();
    clientConfiguration.setSignatureConfiguration(signatureConfiguration);
    SpotWebSocketApi spotRestApi = new SpotWebSocketApi(clientConfiguration);

    // Basic client config
    WebSocketClientConfiguration clientConfiguration = SpotWebSocketApiUtil.getClientConfiguration();
    // set usePool flag to true
    clientConfiguration.setUsePool(true);
    // Use the api
    SpotWebSocketApi spotWebSocketApi = new SpotWebSocketApi(connectionWrapper);

    // Basic client config
    WebSocketClientConfiguration clientConfiguration = SpotWebSocketStreamsUtil.getClientConfiguration();
    // set usePool flag to true
    clientConfiguration.setUsePool(true);
    // Use the api
    SpotWebSocketStreams api = new SpotWebSocketStreams(clientConfiguration);

    // Basic client config
    ClientConfiguration clientConfiguration = SpotRestApiUtil.getClientConfiguration();
    // Create the HTTP proxy
    Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("host", 123));
    // Add the proxy to the configuration
    clientConfiguration.setProxy(proxy);
    // Create the Proxy Authenticator
    Authenticator proxyAuthenticator = new Authenticator() {
        @Override public Request authenticate(Route route, Response response) throws IOException {
            String credential = Credentials.basic("username", "password");
            return response.request().newBuilder()
                    .header("Proxy-Authorization", credential)
                    .build();
        }
    };
    // Add the proxy authenticator to the configuration
    clientConfiguration.setProxyAuthenticator(proxyAuthenticator);
    // Use with API
    SpotRestApi spotRestApi = new SpotRestApi(clientConfiguration);

    // Basic client config
    WebSocketClientConfiguration clientConfiguration = SpotWebSocketApiUtil.getClientConfiguration();
    // Create the HTTP proxy
    HttpProxy proxy = new HttpProxy("host", 123);
    // Add the proxy to the configuration
    clientConfiguration.setWebSocketProxy(proxy);
    // Create the Proxy Authentication
    BasicAuthentication basicAuthentication = new BasicAuthentication(
            URI.create("http://host:123"),
            Authentication.ANY_REALM,
            "username",
            "password"
    );
    // Add the Proxy Authentication to the configuration
    clientConfiguration.setWebSocketProxyAuthentication(basicAuthentication);
    // Use with API
    SpotWebSocketApi spotWebSocketApi = new SpotWebSocketApi(clientConfiguration);

    // Basic client config
    WebSocketClientConfiguration clientConfiguration = SpotWebSocketStreamsUtil.getClientConfiguration();
    // Create the HTTP proxy
    HttpProxy proxy = new HttpProxy("host", 123);
    // Add the proxy to the configuration
    clientConfiguration.setWebSocketProxy(proxy);
    // Create the Proxy Authentication
    BasicAuthentication basicAuthentication = new BasicAuthentication(
            URI.create("http://host:123"),
            Authentication.ANY_REALM,
            "username",
            "password"
    );
    // Add the Proxy Authentication to the configuration
    clientConfiguration.setWebSocketProxyAuthentication(basicAuthentication);
    // Use with API
    SpotWebSocketStreams spotWebSocketApi = new SpotWebSocketStreams(clientConfiguration);